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Answer Posted / sennapparajan
If the panel having morethan 1 mains ... one breaker will
be used between 2 mains which can be used to supply the
power if case of any mains failuire its called buscoupler.
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we have earthmat at 110KV substation.we would like to take earth resistance.b some says that by connecting earth megger terminals (C1,P1) at middile point of earthmat (at riser) will cause voltage gradient at other earthmat nods and dont get exat earth resistance.when connecting at end nods will get exat value . is it correct .please explain
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